TOYOTA PARKING ASSIST-SENSOR SYSTEM(w/ Simple Intelligent Parking Assist System) TERMINALS OF ECU


  1. CLEARANCE WARNING ECU ASSEMBLY

    A001SYVN01

    1. Disconnect the F38 clearance warning ECU assembly connector.

    2. Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F38-8 (IG) - F38-1 (E) BE - W-B IG power source signal Ignition switch off Below 1 V
      Ignition switch ON

      11 to 14 V*1

      9.5 to 14 V*2
      F38-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω

      • *1: w/o Stop and Start System

      • *2: w/ Stop and Start System

    3. Reconnect the F38 clearance warning ECU assembly connector.

    4. Measure the voltage and check for pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F34-11 (E1) - F38-1 (E) P - W-B Ground for rear sensor circuit Always Below 1 V
      F34-5 (S3) - F38-1 (E) G - W-B Sensor communication signal (rear center RH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F34-3 (S1) - F38-1 (E) L - W-B Sensor communication signal (rear corner RH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F34-8 (BOR) - F38-1 (E) Y - W-B Power source for rear sensor circuit Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R 7.5 to 14 V
      F38-7 (ER) - F38-1 (E) B - W-B Ground for No. 2 clearance warning buzzer Buzzer not sounding Below 1 V
      F37-4 (EF) - F38-1 (E) P - W-B Ground for No. 1 clearance warning buzzer Buzzer not sounding Below 1 V
      F37-9 (S9) - F38-1 (E) V - W-B Sensor communication signal (front side RH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F37-12 (S7) - F38-1 (E) R - W-B Sensor communication signal (front center RH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F37-11 (S5) - F38-1 (E) SB - W-B Sensor communication signal (front corner RH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F37-3 (CBZ) - F38-1 (E) SB - W-B No. 1 clearance warning buzzer signal Buzzer sounding Pulse generation
      F38-15 (BBZ) - F38-1 (E) L - W-B No. 2 clearance warning buzzer signal Buzzer sounding Pulse generation
      F34-4 (S4) - F38-1 (E) LG - W-B Sensor communication signal (rear center LH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F34-2 (S2) - F38-1 (E) V - W-B Sensor communication signal (rear corner LH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F37-5 (BOF) - F38-1 (E) LG - W-B Power source for front sensor circuit Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R 7.5 to 14 V
      F37-10 (S10) - F38-1 (E) G - W-B Sensor communication signal (front side LH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F37-1 (S8) - F38-1 (E) W - W-B Sensor communication signal (front center LH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F37-2 (S6) - F38-1 (E) G - W-B Sensor communication signal (front corner LH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F37-6 (E5) - F38-1 (E) GR - W-B Ground for front sensor circuit Always Below 1 V
      F34-1 (S11) - F38-1 (E) R - W-B Sensor communication signal (rear side RH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation
      F34-9 (S12) - F38-1 (E) B - W-B Sensor communication signal (rear side LH) Ignition switch ON, TOYOTA parking assist-sensor system on, shift lever in R Pulse generation